:root {
    --primary: #0f172a;
    --secondary: #1e293b;
    --accent: #10b981;
    --accent-hover: #059669;
    --text: #f8fafc;
    --text-muted: #94a3b8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--primary);
    color: var(--text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- Header & Nav --- */
header {
    background-color: var(--secondary);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
}

nav a {
    color: var(--text);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover { color: var(--accent); }

/* --- Main Layout --- */
main {
    flex: 1;
    padding: 2rem 5%;
}

/* --- Hero Section --- */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* --- Packages --- */
.packages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.card {
    background-color: var(--secondary);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid var(--accent);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.2);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card .price {
    font-size: 2rem;
    color: var(--accent);
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.card p { color: var(--text-muted); margin-bottom: 1rem; }

/* --- Forms --- */
.form-container {
    max-width: 400px;
    margin: 4rem auto;
    background-color: var(--secondary);
    padding: 2.5rem;
    border-radius: 12px;
}

.form-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 0.5rem; }

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #334155;
    background-color: var(--primary);
    color: var(--text);
    border-radius: 6px;
    outline: none;
}

.form-group input:focus { border-color: var(--accent); }

.btn {
    display: inline-block;
    width: 100%;
    background-color: var(--accent);
    color: #fff;
    padding: 0.8rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    text-decoration: none;
    text-align: center;
}

.btn:hover { background-color: var(--accent-hover); }

/* --- Dashboard --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.dash-card {
    background-color: var(--secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.error { color: #ef4444; text-align: center; margin-bottom: 1rem; }

footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--secondary);
    color: var(--text-muted);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    header { flex-direction: column; gap: 1rem; }
    nav a { margin: 0 0.5rem; }
}